# (lambda t,f: f(t,f))(10, lambda t, f: f(t-1, f)+f(t-2,f) if t>2 else 1)
def f(t,f):
    if t>2:
        return f(t-1,f)+f(t-2,f)
    else:
        return 1
a=f(10,f)
print(a)
